Foundation June 2019 Paper 1 Q20
20 Here are two squares, A and B.
The length of the side of square A is 50% of the length of the side of square B.
Express the area of the shaded region of square A as a percentage of the area of square B. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 12.5 | P1 | starts to process the problem, eg assigns lengths of sides to squares A and B in the ratio 1 : 2 oe and calculates at least one area OR fits 4 of square A into square B OR for ratio of areas of squares eg 1 : 4 oe |
| P1 | for process to express relationship between area of shaded triangle and area of square B, eg 1 : 8, \(\dfrac{1}{8}\) OR 0.125 | |
| A1 | for 12.5 oe |
Additional guidance
For the first P1: May be seen in a diagram
For the second P1: May be seen in a diagram with figure given